osfmk/i386/hi_res_clock.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26
  27 #ifndef _MACHINE_HI_RES_CLOCK_H_
  28 #define _MACHINE_HI_RES_CLOCK_H_
  29
  30 #include <types.h>
  31 #include <mach/i386/vm_types.h>
  32
  33 extern vm_offset_t hi_res_clk_mmap(
  34         dev_t           dev,
  35         vm_offset_t     off,
  36         int             prot);
  37
  38 extern void clock_thread_386(
  39         int     loop_iterations_per_tick,
  40         int     *high_res_clock);
  41
  42 #endif  /* _MACHINE_HI_RES_CLOCK_H_ */